Methyl Isobutyl Ketone → 5-Ethylquinolinic acid

Reaktionsgleichung

[CH2:1]([C:3]1[CH:4]=[C:5]([C:12]([OH:14])=[O:13])[C:6]([C:9]([OH:11])=[O:10])=[N:7][CH:8]=1)[CH3:2].[CH2:15](C(C)=O)[CH:16](C)C>C(Cl)Cl>[CH2:1]([C:3]1[CH:4]=[C:5]([C:12]([OH:14])=[O:13])[C:6]([C:9]([OH:11])=[O:10])=[N:7][CH:8]=1)[CH3:2].[CH2:1]([C:3]1[CH:8]=[N:7][C:6]2[C:5]([CH:4]=1)=[CH:12][CH:16]=[CH:15][C:9]=2[OH:11])[CH3:2]

Komponenten

Versuchsvorschrift

Preparation of 5-ethyl-2,3-pyridinedicarboxylic acid ##STR6## The nitrate salt obtained in Example 1 is dispersed in a mixture of 100 mL of methylene chloride and 100 mL of methyl isobutyl ketone, heated at reflux temperature for 1 hour, cooled to room temperature and filtered. The filter cake is washed with a 1:1 mixture of methylene chloride:methyl isobutyl ketone and dried in vacuo to give 5-ethyl-2,3-pyridinedicarboxylic acid, 34.6 g, (89% isolated yield from 3-ethyl-8-hydroxyquinoline), 94.5% pure by HPLC.